-based on open system interconnection (OSI) IS-IS
-link state protocol
-support for IP, OSI routing protocols
-used for Level 2 routers for interconnecting areas
-Level 1 routers for internal to areas
-difficult to implement
-there is no area 0

Name 5 different routing protcols

-OSPF
-IS-IS
-IGRP
-EIGRP
-RIP v 2

BGP= border gateway protoccol

-internet routing
-distance vector
-between asynchronous systems

what routing protocols can you find in the access, distribution, and core areas?

-access- OSPF, EIGRP, IS-IS

-distribution- selected access protocol

-core- RIPv2, OSPF, EIGRP, ODR, Static

What type of connectivity does PSTN use?

AAA static routing
snapshot routing

What type of connectivity does the internet use?

static routing
BGP

What is redistribution ? used in Routing protocols?

-enables protocol coexistence in a single network
-routes between sites